Ag@AgCl/Bi4Ti3O12光催化降解亚甲基蓝的反应动力学研究.

The Ag@AgCl/Bi4Ti3O12photocatalyst was used to treat the methylene blue solution under visible light. The effects of the photocatalyst dosage, the pH value of the wastewater and the photodeposition time on the degradation effect were investigated. The photocatalytic reaction kinetic analysis was performed. The results show that when the photocatalyst dosage is 180 mg, the pH value is 10,and the photodeposition time is 30 min, the degradation effect of 200 mL of 10 mg/L MB solution for 60 min with a 300 W xenon lamp. The photocatalytic decolorization rate reaches 98.96%,the first-order reaction kinetics of the Ag@AgCl/Bi4Ti3O12 catalytic degradation of MB solution under visible light has a good fit value, the surface reaction rate k reaches 0.074 11 min-1,and the half-life t1/2 is 9.35 min, which further proves that Ag@AgCl/Bi4Ti3O12 has better catalytic performance. [ABSTRACT FROM AUTHOR]